rudder

rud·der

R0337700 (rŭd′ər)n.1. a. A vertically hinged plate of metal, fiberglass, or wood mounted at the stern of a ship or boat for directing its course.b. A similar structure at the tail of an aircraft, used for effecting horizontal changes in course.2. A controlling agent or influence over direction; a guide.

[Middle English ruder, from Old English rōther, steering oar; see erə- in Indo-European roots.]

rudder

(ˈrʌdə) n1. (Nautical Terms) nautical a pivoted vertical vane that projects into the water at the stern of a vessel and can be controlled by a tiller, wheel, or other apparatus to steer the vessel2. (Aeronautics) a vertical control surface attached to the rear of the fin used to steer an aircraft, in conjunction with the ailerons3. anything that guides or directs[Old English rōther; related to Old French rōther, Old High German ruodar, Old Norse rōthr. See row²] ˈrudderless adj

rud•der

(ˈrʌd ər)

n. 1. a vertical blade at the stern of a vessel that can be turned to change the vessel's direction when in motion. 2. a movable control surface attached to a vertical stabilizer, located at the rear of an airplane and used, along with the ailerons, to turn the airplane. 3. any means of directing or guiding a course. [before 900; Middle English rodder, rother, ruder, Old English rōther, c. Old Frisian rōther, Middle Dutch rōder (Dutch roer), Old High German ruodar (German Ruder); akin to row²] rud′der•less, adj.

rudder

- First meant "paddle" or "oar."See also related terms for paddle.

Thesaurus

Noun	1.	rudder - a hinged vertical airfoil mounted at the tail of an aircraft and used to make horizontal course changesaerofoil, airfoil, control surface, surface - a device that provides reactive force when in motion relative to the surrounding air; can lift or control a plane in flightvertical tail - the vertical airfoil in the tail assembly of an aircraft
	2.	rudder - (nautical) steering mechanism consisting of a hinged vertical plate mounted at the stern of a vesselsailing, seafaring, navigation - the work of a sailorrudder blade - the vertical blade on a rudderrudderpost, rudderstock - a vertical post at the forward edge of a rudder that enables the rudder to pivotsteering mechanism, steering system - a mechanism by which something is steered (especially a motor vehicle)tiller - lever used to turn the rudder on a boatvessel, watercraft - a craft designed for water transportation

Translations

舵飞机方向舵

rudder

(ˈradə) noun1. a flat piece of wood, metal etc fixed to the back of a boat for steering. 舵2. a similar device on an aircraft. 飞机方向舵

rudder

rudder,

mechanism for steering an airplaneairplane,
aeroplane,
or aircraft,
heavier-than-air vehicle, mechanically driven and fitted with fixed wings that support it in flight through the dynamic action of the air.
..... Click the link for more information. or a ship. In ships it is a flat-surfaced structure hinged to the stern and controlled by a helm. When the ship is on a straight course, the rudder is in line with the vessel; if the rudder is turned to one side or the other it offers sufficient resistance to the water to deflect the stern, thus changing the direction of the ship. In earliest times, as in small boats today, a paddle or oar hand-operated at the stern served to turn a boat. Later, Greek and Roman vessels required two rudders, one at each end, in order to maintain course when the prow or stern lifted out of the water. Vikings placed the rudder not directly on the stern but on the right side near it; thus the term starboard (steerboard) is used for the right side of a vessel. By the early 14th cent. the stern rudder had generally replaced the side rudder, and in the latter half of the 19th cent. wooden rudders gave way to iron and steel. Large modern liners have rudders that are 60 ft (18 m) or more in height and weigh 100 tons.

Rudder

in vessels, a device for maintaining the vessel on course and for turning the vessel while under way. The rudder is usually a slab (the blade of the rudder), which can rotate about its vertical axis (vertical rudder). When the rudder is turned from the straight position, its surfaces are subjected to hydrodynamic forces that shift the vessel from the trajectory of steady-state motion. The rudder blade is flat or streamlined.

Rudders may be of the simple, balanced, and semibalanced

Figure 1. Ship’s rudders: (a) simple, (b) balanced, (c) semibalanced; (1) rudderstock (axis of rotation), (2) blade

type, depending on the position of the rudder blade in relation to its axis of rotation (see Figure 1). Less force is required to turn balanced rudders in comparison with simple rudders. A vessel’s maneuverability and controllability depend on the rudder’s characteristics, including area and shape. The rudder is usually located at the vessel’s stern; it may sometimes be mounted at the bow, for example, in ferryboats.

On some vessels, the rudder’s function is performed by deflection nozzles, which change the direction of the stream of water thrust back by the vessel’s propeller. Vessels with rotary-blade propellers can maneuver without the use of a rudder. In addition to vertical rudders, horizontal rudders (diving planes or diving rudders, used to control motion in a vertical plane) are installed on submarines. Rudders may also be equipped with a propeller on the blade in order to improve controllability at low speeds and for maneuvering at standstill.

E. G. LOGOVINOVICH

rudder

[′rəd·ər] (engineering) A flat, usually foil-shaped movable control surface attached upright to the stern of a boat, ship, or aircraft, and used to steer the craft. rudder angle

rudder

The primary vertical and movable control surface, which is hinged to the fin and primarily controls the yawing movement of the aircraft. The rudder is moved by foot-operated pedals (called rudder pedals in the cockpit. A rudder application causes a yawing motion about the vertical axes. A typical rudder control surface includes aerodynamic balance and tab features. All-moving vertical stabilizers replace rudders on some supersonic aircraft.

rudder

1. Nautical a pivoted vertical vane that projects into the water at the stern of a vessel and can be controlled by a tiller, wheel, or other apparatus to steer the vessel 2. a vertical control surface attached to the rear of the fin used to steer an aircraft, in conjunction with the ailerons

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Words related to rudder

noun a hinged vertical airfoil mounted at the tail of an aircraft and used to make horizontal course changes

Related Words

noun (nautical) steering mechanism consisting of a hinged vertical plate mounted at the stern of a vessel

Related Words